BMW E90 E91 Diesel 335d M57N2 Automatic Auto Gearbox GA6HP26Z 7566901 WARRANTY

BMW E90 E91 Diesel 335d M57N2 Automatic Auto Gearbox GA6HP26Z is a factory-original automatic transmission designed for high-performance BMW 3 Series diesel engines. Thanks to its design tailored to the M57N2 engine and diesel powertrain, it ensures consistent torque transfer, smooth gear shifts, and stable operation of the drivetrain. This is a solution for users who expect original automatic transmission performance and compatibility with the vehicle's factory configuration.

Specifications and technical data

• SKU: 7566901
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7566901
• Substitutable numbers: 24007566901, 7566901
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and compatibility with the Diesel unit

The presented automatic transmission has been designed to work with the M57N2 diesel engine in BMW 3 Series E90 and E91 335d models. Using a transmission dedicated to a specific fuel type ensures proper tuning to the torque characteristics of the diesel unit, which translates into predictable vehicle behavior, correct operation under load, and stable acceleration across the entire rev range.

Thanks to its factory origin from the GA6HP26Z family, the gearbox maintains original shift points, automatic mode logic, and integration with the vehicle's control systems. This is particularly important for higher-power vehicles, where proper transmission matching has a direct impact on the durability of the entire drivetrain.

Automatic transmission characteristics

The automatic design of the transmission ensures comfortable vehicle operation without the need for manual gear changes. The control system selects gears based on load, speed, and driving style, which facilitates daily use and city driving. Combined with a diesel engine, the gearbox allows for efficient use of available torque, reducing jerking and unwanted stress.

BMW automatic transmissions from this series are designed to operate in demanding conditions while maintaining appropriate refinement and predictable throttle response. A properly selected transmission helps maintain stable engine RPM, which promotes both driving dynamics and fuel economy.

Application in the BMW drivetrain

In BMW E90 and E91 335d models, the automatic transmission plays a key role in transferring power from the engine to the wheels. Matching the transmission to the specific engine variant and body style allows for the preservation of factory acceleration parameters, smooth starting, and correct interaction with the vehicle's electronic systems.

Replacing a worn or damaged transmission with an original unit from the same family is a solution that minimizes the risk of compatibility issues, reduces the need for additional modifications, and facilitates future diagnostics. This is especially important for cars equipped with advanced traction and stability control systems.

Benefits of choosing a used BMW automatic transmission

By choosing a used automatic transmission for a BMW 335d, you can significantly reduce repair costs compared to purchasing a brand-new component or a full overhaul, while maintaining the original specifications. A properly selected transmission from the same model series allows you to retain the factory driving feel without the need for software modifications or the installation of additional adapters.

To better assess when choosing a used transmission is cost-effective and what to look for when buying, it is worth checking out our guide: Used transmission – when it pays off and what you need to remember. The article discusses the differences between manual and automatic transmissions, compatibility issues, and compares purchasing a used unit with the remanufacturing process.

Expanding the scope of work on BMW transmissions

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other components from the same group, such as a torque converter, control elements, or additional transmission parts, check out the available parts in the BMW automatic transmissions category.